1. Systematic and Evolutionary Botany Lab, Department of Biology Ghent University Ghent Belgium
2. Ghent University Botanical Garden Ghent University Ghent Belgium
3. Gifu Academy of Forest Science and Culture Mino Japan
4. Red de Diversidad Biológica del Occidente Mexicano, Centro Regional del Bajío Instituto de Ecología, A.C Pátzcuaro Michoacán Mexico
5. Royal Botanic Gardens, Kew Richmond UK